// Copyright 2019 Google Inc. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-initializedatetimeformat
description: >
  Checks handling of the options argument to the DateTimeFormat constructor.
info: |
  [[DayPeriod]]    `"dayPeriod"`    `"narrow"`, `"short"`, `"long"`
  InitializeDateTimeFormat ( dateTimeFormat, locales, options )

  ...
features: [Intl.DateTimeFormat-dayPeriod]
---*/

function Test() {
    const validOptions = [
      [undefined, undefined],
      ["long", "long"],
      ["short", "short"],
      ["narrow", "narrow"],
      [{ toString() { return "narrow"; } }, "narrow"],
      [{ valueOf() { return "long"; }, toString: undefined }, "long"],
    ];
    for (const [dayPeriod, expected] of validOptions) {
      const dtf = new Intl.DateTimeFormat("en", { dayPeriod });
      const options = dtf.resolvedOptions();
      assert.sameValue(options.dayPeriod, expected);
      const propdesc = Object.getOwnPropertyDescriptor(options, "dayPeriod");
      if (expected === undefined) {
        assert.sameValue(propdesc, undefined);
      } else {
        assert.sameValue(propdesc.value, expected);
      }
    }
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
